By which reaction is benzene prepared from cyclohexane?
Correct answer: B. Dehydrogenation
- A. Hydrogenation
- B. Dehydrogenation
- C. Dehydration
- D. None of these options are correct
Explanation
Dehydrogenation is the process by which hydrogen is removed from an organic compound to form a new chemical (e.g., to convert saturated into unsaturated compounds). Dehydrogenation of cyclohexane produces benzene.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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